Portable water purification apparatus



FIG. 1 is a left side view of a portable water purification apparatus showing my new design;

FIG. 2 is a bottom view;

FIG. 3 is a top view;

FIG. 4 is a right side view;

FIG. 5 is a front view; and,

FIG. 6 is a rear view. 

The ornamental design for an portable water purification apparatus, as shown. 